I have a M11 radio with a Spektrum module and I need some advice on if it's worth upgrading to a newer radio like the Futaba 4PKS-R. I mostly use the M11 for racing at club races and most of the time it works fine except for some bad glitching from time to time during the mains. Would I notice a big difference with a new Futaba 4PKS-R or the cheaper 4PLS?